1. Transmission Related Issues (Most Likely Contributing Factor):
* Shift Linkage/Cable Problem: The most likely culprit is a problem with the shift linkage or cable connecting the shifter to the transmission. It could be broken, jammed, or out of adjustment, preventing the transmission from properly disengaging reverse. Try gently rocking the car back and forth while attempting to shift into neutral or park. If it shifts, the linkage is likely the problem.
* Transmission Internal Issue: A more serious (and expensive) possibility is an internal failure within the transmission itself. This could involve broken parts preventing the shifting mechanism from working correctly. This would require professional diagnosis and likely a transmission repair or replacement.
2. Starting System Issues (Preventing Engine Turn Over):
* Dead Battery: The most common cause of a no-start condition. Check the battery voltage with a multimeter. A low voltage (below 12.2V) indicates a dead or weak battery.
* Faulty Starter Motor: The starter motor cranks the engine to start it. If it's failing, you might hear a click, a groan, or nothing at all when you turn the key.
* Bad Starter Solenoid: This is a part of the starting system; a problem here prevents the starter motor from receiving power.
* Alternator Issues (Less Likely, but possible): While less likely to directly prevent starting, a faulty alternator could have drained the battery if it hasn't been charging properly, leading to the no-start condition.
* Other Electrical Issues: A problem with the ignition switch, wiring, or other electrical components can prevent the starter from receiving power or the engine from functioning.
Troubleshooting Steps:
1. Check the Battery: Test the battery voltage with a multimeter. If low, charge or replace it.
2. Shifting: Try gently rocking the car while attempting to shift into Neutral or Park. If it shifts, you've likely isolated the problem to the shift linkage/cable.
3. Listen Carefully: When you turn the key, listen for any unusual sounds (clicking, groaning, etc.). This can help pinpoint the source of the starting problem.
4. Check the Starter: If you're comfortable with basic car mechanics, you can visually inspect the starter for damage. However, this is generally best left to a mechanic.
5. Professional Diagnosis: If you can't shift out of reverse or determine the cause of the no-start, take the car to a qualified mechanic. They have specialized tools and knowledge to diagnose and repair transmission and starting system problems.
Important Note: Do not attempt to force the shifter if you suspect a mechanical issue with the transmission or linkage. This could cause further damage. Only attempt the rocking/shifting method gently.
